Transmission mechanism



E. J. WELFFENS. TRANSMISSION MECHANISM. APPLICATION FlLED on. 3, 1918.-

1,391,290. PatentedSept. 20,1921.

4' SHEETS-SHEET I.

E. J. WELFFENS.

TRANSMISSION MECHANISM.

APPLICATION FILED OCT. 3, 1918.

PatentedSpt. 20,1921.

4 SHEETS-SHEET 2.

7 E. J. WELFFENS.

TRANSMISSION MECHANISM.

APPLICATION men ocr. a, 1918.

PatentedSept. 20,1921. 1 7 4, SHEE-TS-SHEET 3.

a 5M any Wm 5 a M/ u TAT Es P TEN am na JQHN wE FrE s; orwEsrwrrmN ToN, mmcrmsran, ENGLAND.

TRANSMISSION MECHANISM. 2

To all-whom it mayooncern: V

Be it known that I, EMILE'JOHN' WELF FENS, a subject of=the King of the Belgians, residing at 8 Mauldeth road, West Withington, Manchester, in the county of Lancaster? England, have invented new and useful Im provements Relating to Transmission Mechanism, of which the following is a specifi cation.

This invention relates to transmission.

mechanism, and more particularly-to that typeof transmiss onused 1n spinningmachines and known as swinggearing for-the slubbing, roving and like frames, wherein the drive is transmitted from a driving wheel -mounted for rotation upon a-shaft which is stationary, to a drivenwheel securedto a shaft which moves in a vertical path,-t he; object of the invention being to provide an improved device of this character whereby a flexible transmitting member may be used and at-the. same time continuity of steady motion is maintained to a degree not possible with devices heretofore'in use.

A further object ofthe invention is the provision of a deviceof the character set forth, in which the bobbin or flier gear will be caused to" run uniformly in all positions of the vertically movable shaft, and the bobbin rail maintained'in perfect alinement in its vertical guides.

A further objectof the invention is the provision of the device. of the character set forth in which the load on the flexible driving member is neutralized in such a manner that shocks and vibrations dueto the reversal I of the carriage or bobbin rail and to the constantly changing position of said rail are eliminated, so that they cannot be transmitted to the driving wheel of the swing.

WVith the foregoing and other objects'in view, which' will appear as the description proceeds, the invention consists in the novel features of construction and combination of parts which will be more fully described hereinafter and particularly pointed out in the claims.

In the drawings accompanying and forming part of this specification,

- Figures 1, 2 and 3 are diagrammatic Side views of a single drive swing embodying the present invention, each of these figures Application:flledOctober '3, 1918. Seria1 No. 256,740.

Specifi cationot LettersPatent, Y Patented r 0,

illustrating .a modification of the shock absorbing means; I r I Figs. .4, 5 and '6 are diagrammatic side views of a device having two [swinging drives, each of these figures illustrating the invention in asomewhat different form;

Fig. 7 is a diagrammatic side elevation of a device comprising two drives, only one of which swings, but both operating with con-;

stant center distances,'without theprovision of shock-absorbingtdevices;

Figs. 8 and 9 are-diagrammatic sideviews illustrating astructure similar tothatshown in Fig. 7, but-showing two different forms of shock-absorbing devices applied thereto;

Figs. 10 and 11 are plan .views, broken away, respectively of the structures shown in Figs. 8 and 9;- 5

Fig. 12 is an endview, broken away, illustrating an embodiment of the invention in which a free and floating connection between themovable andstationary parts of the'machine is 1 provided; v I Fig. 13 is a broken away plan view of the structure shown in Fig. 12; and,

Figs. 14 and 15 are respectively a detail plan and an end elevation of a means for suspending the spring shown in F igs.-.12 and 13 to its supporting bracket. I

The same characters of reference designate the same parts in the different figures of the drawings. 1

Referring to the drawings, and especially to Figs. 1 to 10 inclusive,'8 designates a driving wheel,.which is 'mountedloosely for rotation on a stationary shaft (not shown),.

' tically is well known bythose skilled in the art, an d in the interest of clearness of illustration, such structurehas been omitted from the drawings.

Referring now more particularly to Figs.

1 and 2, the reference character 2 designates a thrust link which is pivotallysecured at one end to the driven shaft carrying the wheel 3, and which link carries'at its ,opposite end a pivotally mounted bell crank lever 9, on; one1arm of which isl pivotally" 'mounted a jockey wheel 1 engaging the inher side of the flexible driving. member'fi. The pintle on which the jockey wheel 1 is mounted contacts with a cam member 7,

which'is secured to a fixed portion of the machine and the contour of which cam is calculated to compensate for the-angular oscillations of the driving wheel S' inYi'ts vertical movement. A second thrust link or arm 4 is'pivotally carried onthe shaft of the driven wheel3 and is provided interv mediate its'ends with a pintle on which is mounted for rotation a jockey wheel 5 which engages the outer side of the flexible drivingmemberor'chain 6; In the form shown in Fig. 1, the free end of the link 4' has secured thereto one'end of 'a' coil spring 12, the opposite end of which mergesinto a rod 14 which is secured to the link 2 at the pivotal point sion of the spring may be regulated to suit the load. Asecond coil spring 10'is' se-. 'cured to the link 2 intermediate its ends,

the opposite end of said spring being adjustably connected by means of a nut 11 with the free endof'thelonger arm. of thebell crank. lever 9; In themodified form'shown in Fig. 2, the extra spring 12 is'omitted, and

the spring 10, instead'of being connected to the link 2, is lengthened and connected to the free end of the link 4. A transversely extending lug or pin-15 is provided on the link 2 to serve as a stop for the bellcrank 9 when the device is at rest.

In the modification shown in Fig. 3'the bell crank is dispensed with, and the jockey wheel 1 is carried by the upper memberof a two-part link 2, said upper member carrying an extension or bar 24- the lower end of which slidably'engages an axially extending opening in the lower member of the linkQ.

and is provided with atransversely extend ing pin l5 -thatengages a slot in the walls of said lower member for limiting the movement ofthe upper member of the link. The 3 upper and lower members of the link 2? are? each provided with a shoulder or boss, and" a c'oilv spring 10 encircles the connecting bar 24 and abuts at its ends against the shoulders of the upper and lower members respectively, the tension of the spring thus tending to maintain the members'of the link '2 in extended relation. In'fthis form of the device, a weight 17 isv used for counterbalancing" the weight of the'link 4, said weight being connected by 'means of a cable" 16' which passes over a pulley 23 mounted to rotate freely on the pintle or stud, carrying the jockey wheel 1, theopposite end of the 2 cable being connected tothe free end of the link 4; This constructionpossesses the advantage that-in case'of any deviation of the shaft of thedriven-wheel 3 from the horizontalfthe lower member of the link 2 -would merely rotate or swivel on the connecting bar 24, thereby avoiding any warping strain.

Referring now generally to Figs. 4, hand 6, all of which illustrate a construction of two swinging drives, but showing different constructions of shock absorbing means. In the form shown in'Fig. 4, the'mainshaft 2O carrying the driving wheel 8 is mounted in a split bearing block 20, which is slidable in an opening in the link or arm 2", the rela- .tive position of the'bearing in said opening being determined by an adjusting bolt- 19 passing longitudinally through one end of the arm 2 and contacting at its inner end with the block 20,a cushioning spring '10" being inserted between the opposite end of the block and the inner end wall of the openingin the arm 2.-. A second adjusting bolt 19 passes through said inner endwalland carriesanjabutment or seat for the spring 10 whereby the tension of said spring may be adjusted'to suit the loadon the machine. The jockey wheel 1 in this case is a double pulley 'and receives its motion by means'of a flexible member or chain 6 from wheel 8 and transmits it to driven wheel 3 by means of a second chain-or other flexible transmit ting member 6 The cam 7 in the form of thedevice shown in Figs. 4,f5 and 6 is dis posed between the axes of the wheels 3' and 1, instead of'between the axes of wheels 8 and 1 as shown in Figs. 1, 2- and 3,and the wheel 1 is provided with a traveling'bearing'18 in contact with the cam 7. 'It will be obvious, of course, thateither-or both of these mem-' bers 7 and 18 may, if desired, be made adj ustable in any well-known manner so as to vary the distance between the axes of the" wheels 1' and 3. V The structure shown in Fig. 5' differs: from that of Fig' .4 only in the manner-of connecting the wheels 8 and 1. In this form, the thrust link 2, instead of being connected directly to the shaft carrying the wheel8, is attached to an auxiliary link orfa-rm 9*" which is pivotally mounted intermediate its ends on said shaft- To the free end of this link 9 is secured one end'of a band spring 10, the other end of which is, secured to the free'end of an angular extension of the link 2, said angular extension and the link 51* being providedat their free ends with abutting lugs 2 and'9 respectively, thereby to limit the action ofthe spring 10 In' theform shown in Fig. 6,thethrust 'link;2 is in the form ofa loop having at risen-m projections or and2 respectively.

The shaft-on which the driving wheel '8 is mounted passes .eccentrieallythroughxa bearing 21 which. is located.= within the loop. of the thrust-member 2?, said bearingbeing provi'dedwith a pairof laterally extending perforated lugs 21 and 21', the latter ofwhich is connectedwbymeans of a' i'od22 iwithethe.

lug 2 of the thrust link and is adjusteil .-.t0

the "proper distance from said lug by means of-the adjustingznut 13".. Thelug 21 isconnectedto the lug .12 of the thrustli nk .by'

meansof a coil spring 110?, the tension .of' which is. also adjustable by 'ineansof the a'd jus'ting nut-11".. V

In-the form shown, in Figs 7, 8,; and 9,"

i the-twowheels 8 and3 are of-equal diameter 7 required. di erence "in speed between the sion isfimade for absorbing shocks and also for preventingwarpingstrain. .The' link'2 and are carriedat opposite endsof aLtwo-T partfthrust arm 2 .I'n' Figs. 7 and -9,one part of the arm' is shown slidable ion the other by means of a slotand: pin connection,

as shown at 29.; *By this-arrangement epicyclic irregularities are avoided. The second drive, asshown more clearly in Fig. 10,.

ismou-nted uponbobbin shafts 27 and 28,.the ratio of-the. ears-being such as to give'the' driving wheel 8 and driven-wheels 32." Gear 30 is loosely mounted on shaft 27 and carries .on one side thereof one member of an-Old-f ham coupling 25., the other member being carried bythe wheel 3, 'whereby motion is imparted from Wheel 3 through gear 301to gear 31--s ecured;to shaft 28,1a'ridzthrough the] equal gears '32' on shafts 27 and 28' to said shaft 27. zBy the .u'se-"ofthe :Oldham or-sliding coupling, center distance {variations are neutralizedw It rwill,.-of course, be obvious that when no difference ,i-n-speed between the wheel 8 and gear 32 is. desired, the gears 30. I and 31 may be omitted andthe clutch 1118111 ber secured directly ito gear 32 on 'shaft27f The connection of the thrustarm 2 's'hown in Figs. 7jto 13 inclusive-,withthe'shaft 27 5 is by means of; abearing block :20 mounted on the shaft and; slidable in aslot in the arm- 2. Inithestru'cture shown in Fig. 7, how, ever, noshock abs'orbing devie'es are present. The device illustrated inFigfl-S is similar tothat .shown in Fig. 7, except thatiprovie in .thiscaseis" similar in construct-ion to that shown in Fig. 3, that is to say, the two members of'the link are connectedj-by-afrodrore bar 24 .--pro'j ecting from, one 5 member and slidable in an axial opening in; the other member, the sliding'movement being limited by a pin and slot connection 15*,Iaspring' IOF-encircling: themeinbers of the-link and abutting at-its ends against shoulders carried by said members. i r

vThe device illustrated to that-shown'fin Fig; 7 butnlll addition-a device for iving aggregate motion rlS in-- is similar corporated for imparting the desired r shockabsorbing qualities. 'In this form of the device, a pair of 'pinions 33 and 34 secured to a common pintle or. stud are provided, :Sflld pintle being carried-.by onelend of aniarm' 26, which isip'ivotally mounted midway of its length on the'shaft-27. The opposite end of-Ithe'a-rm 26 carries a weight-17?, which lserves toLcounterbalance the gweight of the pinions 33 and 34 andretainithe armiinhorizontal position when at rest Thewei ghted end of the "arm isattached to one end of a coiled spring ,10 the;opposite end of whiclr is of hook-formation, whereby? it maybe at:

' tached to any suitabl'epo-rtion of the. car

riageor bobbin rail (not-shown); From this construct-ion, it will bei'iseen that when the device is working steadily, the arm 26 will remain horizontal l and thus-retain the pin ions 33' and '34: ingtheir normal position shown .in dotted. lines in Fig. 9, and will transmit motion "from "the gear 3Of to the a gear 32 on'shaft 27;(see Fig." 11).. Any ir regularityot-speed, however,[o'f either gear 30 or 32 will causjpinions 33and '34 mo-if mentarily" to roll along on gears 30(andr32- in a clockwise or anticlockwise direction,

thus absorbing shocks.andiirregularities of speed. a A, .As .to the chainv or equivalent drive and the iOldham; coupling j'ill'ustrated' in the: structures'shown in .Figs; 7 to" 11, itn'i ay be.

pointed out that the maximum displacement of; the traveling member of coupling: 25' from its central position maybe keptdo'wn to halfthe extreme"centeridistanee variation by giv ingthe chain orotherdrive such-fa'constant center distance that. there will abe'no dis--- 'placementrof the traveling member when the carriage 'or bobbin rail, flS midway. between riage' or bobbin mil s, I :f In'Figs. 12' -and "13 iisillus tratedia "con-a struction :whereby all rigidity of: connection between thestationary and moving-parts of the frame iscompletelyeliminated, In this structure the wheel 8 and'its shaft are, aslin ,all'fof the otherl'figu-res,alpart'of the station ary portion of the'machine, while the swing ing-f. arm 2* .carries" the' Em'ovable element.

This arm maybe either a' 'solid arm, oral two-part adjustable? arm,-: as shownrin any. of the other figures;iln'this'instance, however, the arm is entirelyfr'eezfrom any stationary portion of :the frame, it I being cradled in a spring 10?, the, ends of which are'adjustab'ly secured'to a bracket" 330 carried by a 'fiiz'ed ortiom of the iframe, the .f' tension :ofrthe springbeing;adjustableby means of: nutsall? to suit the-loadflon the driving member. As will be clearlyfseenlfromjF 1g. ,12,'th'e arm 12? a is provided with an enlarged l elongated opening. surrounding 'thevshaft carry-v ing the driving wheel" 8,1:-'so that said arm, ,mayha've a free'epicyclic motion about said? shaft, said'motion being limited only by :the

tension of thejspring Inorderto se-:

cure the maximum freedom of motion ana' displacement, knife edge. Supports. for the.

spring, such for instance as shown in Figs. 14 and 15,'may 'be,provided.- As shown in these figures, theopenings .inthe lugsof the.

bracket 330 through which 'the' ends of the springpass are elongated,and each of-vsaid balanced by the action of spring 10* against? arm 2*; while at the .same timer-the structure" latter the nuts-" 11" abut. 7 It will be obvious frame,;and the pull on this member will be is rendered truly shock absorbing. Moreover, this connecting member, although: ,in-' I suring a positive drive, will, becauseof-its flexibility, automatically adjustits position to that of 'thedriving and driven wheels,

while it's'tight side isrendered elasticiby'the tension of the spring :10. It. will also be observed that the free and ifloating suspen sionwof-link 2*, -inv-icombination [with the knife-edge :si'ispension' o-f spring 10*, will I permit: link awe takeupany position into which it may be forced by the actionof'the bobbinrai-l, without creating anystrains intheiarmor in the'motion transmitting mecha} nism etween the driving and driven members.

From the foregoing description, taken inconnection with the drawin'pgaiit willjbe' observed that inall-forms of the deviceherein? v V illustrated, theefl'ects ofiaulty alinement andplay in the guides bathe bobbin rail, well as allirregularitiea shocks and vibrations are'jeliminate'd before they: can beearried, by repercussion, to the driving wheel.

7 'I am aware that. means have heretofore been so as to'prevent their recoil uponith diff ential andgove ni' gean l v suggested for eliminating {the irregularities other causes,'such as-variationsin load, or

the hammer efiect engendered by'the rei-J vers'al of motion of the bobbini rail carriage,

While I havedesjcribed 'n detail structures herein illustrated, it is to be understood that-I ido not thereby limit my irmention tog" therprecise features shown, asiltam aw'are' 7 that many mechanical changes-and modifications .may be madetherein without departing: from the spiritand'scope.of thelinvenl tiony as i s'et .--forth in= the; claims appended I,

hereto.

c Having thus describ dmylinventlon; what iluclaim-isr r I 1.- In a motion transmittiii g.device prising adriving member rotatable in a fi-Xed I plane,"a driven member adaptedlltorec'ipro-"f I cate sin a. path tan enti r to said jdriving:

memberfand flexible means for transmitting motion from said driving; member itoi" said driven -member, the Combination ofmea ns tor supporting said-idriven member in 'driv ing relation to said"driving member and all tomati'cally adjustable during the travel; of said driven member for neutralizing the-' variations of distances between? the axes of-' saidxdriving and'driven membersmx --2. In a motion I transmitting devlce prisinga driving member rotatable in a fixed plane, a. driven member adaptedto V reciprocateini a path tangential to:said'ldriv- I r a ing member, and flexible: means i for transm1tting.:mot1on from saidadr'iving mern-Q brfito {said driven member, theil'combination [of means for supporting" saiddriven member in driving 5 relation to said-driving member; and automatically adjustable during -the travel -of said driven-member for neutralizingrltthe' l variations of dis- 1 tance between the axes 0f thedriving anddriven members; and tension means carriedby: said supporting means for preventing the 5 transmission of "shocks from one'of said membersitothe'otherq In a motiontransmitting'device:com

prisingQa' driving member rotatableiin a fixed lane,.adrivenfmember adapted to re -f ciprocate in a a :path tangential 'to' said 'driv ing? memberyandfiexible means for trans; mitting' motion from 'said; driving? me'mber to said drivenmember, the combination ot means for supporting said idriven' member -in driving relation .withsaid driving member and'com'prisinga plurality -of parts able onefrelativel-y to the other, the relative;

position of' saidf parts being automatically' adjustable' during' the travel of theidriven memberv for neutralizing the variations of distance-between theaxes oi the driving and caused by the angular oscillation of the driven-wheel, butsofar as I am aware; no means? has heretofore been provided for-Q eliminating irregularities resulting from driven members. Y

4. a fmotion transmitting device comp ng a driving member" rotatable in a 'fixe'dplane, a driven member adapted "to re ciprocate inla path tangential to said idrivj ing member, and flex'ible means for transdriving relation with said driving'member and 'comprising a plurality of parts movable one relatively to the other, the relative position of said parts being automatically adjustable during thetravel of the driven member ,for neutralizing the variations of distance between the axes of the driving and driven members, andvtension means carried by said supporting means for preventing the transmission of shocks from one of said members to the other.

5. In a motion transmitting device comprising a driving member rotatable in a fixed plane, a driven member adapted to reciprocate in a path tangential-to said driving member, and flexible means for transmitting motion from said drivin member to said driven member, the com ination of means for supporting said driven member in driving relation with said driving member, said supportin means being pivotall connected with said driving member an comprising a plurality of parts automatically movable one relatively to the other during the reciprocation of said driven member for neutralizing the variations of distance between the axes of the driving and driven members. 7

6. In a motion transmitting device comprising a driving member rotatable in a fixed plane, a driven member adapted to reciprocate .in a path tangential to said drivin member, and flexible means for transmitting motion from said driving member to said driven member, the combination of means for supporting said driven member in driving relation with said driving member, said supporting means being ivotally connected with said driving mem er and comprisinv a plurality of parts automatically movable one relatively to the other during the reciprocation of said driven member for neutralizing the variations of distance between the axes of the driving and driven members, and tension means connected with said supporting means for preventing transmission of shocks from one of said members to the other.

7. In a motion transmitting device comprising a driving member rotatable in a xed plane, a driven member adapted to reciprocate in a path tan ential to said driving member, and flexib e means for transmitting motion from said driving member to said driven member, the combination of a two-part supporting arm for said driven member, one part thereof being pivotally connected wit said driving member, the

parts of said arm being automatically slid- 'connected with said driving member, the

parts of said arm beingautomatically slidable relatively to each other during the reciprocations of said driven member for neutralizing the variations of distance between the axes of the driving and driven members, and tension means for normally retaining the parts of said arm in proper relative position.

In testimony whereof I have signed my name to this specification. 3

EMILE JOHN WELFFENS.

Witnesses S. W. GILLE'I'I, -HERBERT ROWLAND ABBEY. 

